package com.yuexiao.config;
 
import com.alibaba.fastjson.JSON;
import com.yuexiao.entity.ResultInfo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.security.authentication.*;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.stereotype.Component;
 
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
 
/**
 * 登录失败时调用
 */
@Component
@Slf4j
public class MyAuthenticationFailureHandler implements AuthenticationFailureHandler {
 
    @Override
    public void onAuthenticationFailure(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, AuthenticationException exception) throws IOException, ServletException {
 
        Map<String, Object> responseData = new HashMap<>();
//        if (exception instanceof UsernameNotFoundException) {//此异常不会抛出，会被捕捉然后抛出为BadCredentialsException
//            responseData.put("status", 7001);
//            responseData.put("msg", "用户不存在!");
//        }
        httpServletResponse.setContentType("application/json;charset=utf-8");
        httpServletResponse.setStatus(200);
        httpServletResponse.getWriter().write(JSON.toJSONString(ResultInfo.error(exception.getMessage())));
    }
}